import auth from '@/plugins/auth';
import router, { constantRoutes, dynamicRoutes } from '@/router';
import { getRouters } from '@/api/menu';
import Layout from '@/layout/index.vue';
import ParentView from '@/components/ParentView/index.vue';
import InnerLink from '@/layout/components/InnerLink/index.vue';
import { PermissionStore } from '#/store';

// 匹配views里面所有的.vue文件
const modules = import.meta.glob('./../../views/**/*.vue');

const usePermissionStore = defineStore('permission', {
  state: (): PermissionStore => ({
    routes: [],
    addRoutes: [],
    defaultRoutes: [],
    topbarRouters: [],
    sidebarRouters: [],
  }),
  persist: {
    key: 'permission-store',
    storage: localStorage,
    paths: ['routes', 'addRoutes', 'defaultRoutes', 'topbarRouters', 'sidebarRouters'],
  },
  actions: {
    setRoutes(routes) {
      this.addRoutes = routes;
      this.routes = constantRoutes.concat(routes);
    },
    setDefaultRoutes(routes) {
      this.defaultRoutes = constantRoutes.concat(routes);
    },
    setTopbarRoutes(routes) {
      this.topbarRouters = routes;
    },
    setSidebarRouters(routes) {
      this.sidebarRouters = routes;
    },
    generateRoutes() {
      return new Promise((resolve, reject) => {
        // 向后端请求路由数据
        getRouters()
          .then((res) => {
            const sdata = JSON.parse(JSON.stringify(res.data));
            const rdata = JSON.parse(JSON.stringify(res.data));
            const defaultData = JSON.parse(JSON.stringify(res.data));
            const sidebarRoutes = filterAsyncRouter(sdata);
            const rewriteRoutes = filterAsyncRouter(rdata, false, true);
            const defaultRoutes = filterAsyncRouter(defaultData);
            const asyncRoutes = filterDynamicRoutes(dynamicRoutes);
            asyncRoutes.forEach((route) => {
              router.addRoute(route);
            });
            this.setRoutes(rewriteRoutes);
            // 过滤出后台路由，不包含前台路由
            const adminRoutes = constantRoutes.filter((route) => {
              // 只保留后台相关路由
              return route.path !== '/' && !route.meta?.isAdmin === false;
            });
            this.setSidebarRouters(adminRoutes.concat(sidebarRoutes));
            this.setDefaultRoutes(sidebarRoutes);
            this.setTopbarRoutes(defaultRoutes);
            resolve(rewriteRoutes);
          })
          .catch((reason) => {
            reject(reason);
          });
      });
    },
  },
});

/**
 * 遍历后台传来的路由字符串，转换为组件对象
 * @description 安全地处理路由对象，避免修改只读属性
 * @param {Array} asyncRouterMap - 异步路由数组
 * @param {Object} _lastRouter - 上一级路由
 * @param {boolean} type - 路由类型
 * @returns {Array} 处理后的路由数组
 */
function filterAsyncRouter(asyncRouterMap, _lastRouter = false, type = false) {
  // 创建一个新数组，避免修改原始数组
  const newRouterMap = [];

  asyncRouterMap.forEach((originalRoute) => {
    try {
      // 创建路由对象的深拷贝，避免修改原始的只读对象
      const route = JSON.parse(JSON.stringify(originalRoute));

      if (type && route.children) {
        route.children = filterChildren(route.children);
      }
      if (route.component) {
        // Layout ParentView 组件特殊处理
        if (route.component === 'Layout') {
          route.component = Layout;
        } else if (route.component === 'ParentView') {
          route.component = ParentView;
        } else if (route.component === 'InnerLink') {
          route.component = InnerLink;
        } else {
          route.component = loadView(route.component);
        }
      }
      if (route.children != null && route.children && route.children.length) {
        route.children = filterAsyncRouter(route.children, route, type);
      } else {
        delete route['children'];
        delete route['redirect'];
      }

      // 将处理后的路由对象推入新数组
      newRouterMap.push(route);
    } catch (error) {
      console.warn('处理路由对象时发生错误:', error, originalRoute);
      // 如果处理失败，仍然尝试使用原始路由
      newRouterMap.push(originalRoute);
    }
  });

  return newRouterMap;
}

/**
 * 安全地过滤子路由，避免修改只读属性
 * @description 通过深拷贝创建新对象，避免修改原始只读路由对象
 * @param {Array} childrenMap - 子路由数组
 * @param {Object|boolean} lastRouter - 上一级路由
 * @returns {Array} 过滤后的子路由数组
 */
function filterChildren(childrenMap, lastRouter = false) {
  let children = [];
  childrenMap.forEach((originalEl) => {
    // 创建元素的深拷贝，避免修改只读对象
    const el = JSON.parse(JSON.stringify(originalEl));

    if (el.children && el.children.length) {
      if (el.component === 'ParentView' && !lastRouter) {
        el.children.forEach((originalC) => {
          // 为子路由也创建深拷贝
          const c = JSON.parse(JSON.stringify(originalC));
          c.path = el.path + '/' + c.path;
          if (c.children && c.children.length) {
            children = children.concat(filterChildren(c.children, c));
            return;
          }
          children.push(c);
        });
        return;
      }
    }
    if (lastRouter) {
      el.path = lastRouter.path + '/' + el.path;
      if (el.children && el.children.length) {
        children = children.concat(filterChildren(el.children, el));
        return;
      }
    }
    children = children.concat(el);
  });
  return children;
}

// 动态路由遍历，验证是否具备权限
export function filterDynamicRoutes(routes) {
  const res: any = [];
  routes.forEach((route) => {
    if (route.permissions) {
      if (auth.hasPermiOr(route.permissions)) {
        res.push(route);
      }
    } else if (route.roles) {
      if (auth.hasRoleOr(route.roles)) {
        res.push(route);
      }
    }
  });
  return res;
}

export const loadView = (view) => {
  let res;
  for (const path in modules) {
    const dir = path.split('views/')[1].split('.vue')[0];
    if (dir === view) {
      res = () => modules[path]();
    }
  }
  return res;
};

export default usePermissionStore;
